Coffee maker



AugQG, 1929.` c. PAGE Re. 17,399

` w COFFEE MAKER original l-nd mgm 192e Reissued ug. 6, 1929. l

This invention relates to coffee makers such as are now in vogue for mak-ing drip coffee. This coffee is made by allowing hot water to drip through the ground coffee'. Devices struction a holder for the ground coffee which is disposed below a water bowl in which the through the coffee. The receptacle for the ground coffee is'generally made removable lfromV the bowl as a separate piece. It is also customary to provide filtering means, such as filter paper,i1`1 the bottom of the receptacle for the ground coffee, and this bottom is perforated to permit the dripping of the coffee Y through it.

The general object of this invention is to improve the general construction of coffee makers of this type; also to provide a construction which will enable the cost of the coffee makers to be reduced. y

One of the objects of the invention is to construct the device so as to enable it to be used with coffee pots of different sizes.

'One of the objects of the invention is to provide a form for the bottom of the receiver for Vthe ground coffee which will operate to aper. p It is customary to provide an inner cover for the receiver that holds the ,ground coffee at the bottom of the water bowl. This inner cover yis perforated to permit the water to pass through the .coffee from the bowl, and one of the objects of this invention is to provide an improved construction forthis cover to reduce the cost of manufacture and to fa-y cilitate the locking of the cover in place.

This is'an advantageous feature ofthe invenwet ground coffee from forcing the inner cover out of the coffee receiver in such a way ias to Hood thesame with the water from the bowl.

Further objects of 'thefinvention will appear hereinafter. l The invention consists in the novel parts and combination ofparts to be described Vhereinafter, all of which contribute to produce an efficient coffee maker.

, is 'described in thefollowing specification,

pointed out in the appended claims. 55n In the drawing:

f Auurrlszo STA-TES P 5 for this purpose usually include in their con- A Water is poured and from which it drips down.

increase the enective area of the filtering tion because it prevents the swelling of the 1 A preferred embodiment of the invention` l while the broad scope of the invention is AT1-INT OFFICE',

oHAnLns E. PAGE, or Los ANGELES, CALIFORNIA," AssIGNon, BY MEsNElAssIGN- MENTS, 'ro cnnsr conroRA'rIoN, A

CORPORATION Y 0F CALIFORNIA.

n COFFEE -MAKER.

Figure is a vertical section through a coffee maker embodying my invention; and

i Re. ,17,399

original No. 1,666,070, dated April 17, 192s, serial No. 250,446, med January' 30, 192s. Application foiressue filed November 26,1928, Serial No. 322,042.

Figure 2 is a plan of the bottom Vor lower end ofthe coffee receiver.

' Figure 3 is a vertical section through the bottom of the coffee receiver upon an enlarged scale, broken away and illustrating the relation of the filter paper to the corrugations in the bottom. f

Figure 4 is a vertical section Vabout the line 4-4L of Fig. 1 broken away, and illustrating Adetails of the construction of the handle for the cover of the coffee receiver.

In practicing the invention I provide a water bowl. 1 which ispreferablyV formed of sheet metal in the shape of a cylinder. This Vbowl may he spun from a sheet of metal in such a way that a downwardly projecting coffee receivervQ is formed integral with the bowl.. The body of vthis receiver 2 is,v of slightly -conical shape and connectedV by a cylindrical neck 3 with the water bowl.` The body 2 of thecoft'ce receiver has a bottom 4: whichv is foraminous. In the present instance, it is formed of a plate integral with the side of the coffee receiver and provided with perforations 5.

When in use, the coHee maker is inserted in the upper opening 6 in the upper endpf 'a' coffee pot 7 indicated by After the ground coffee has been `placed in the receiver 2, its upper end is closed by means of an inner cover 8, This cover maybe see cured in place by means of one or more bayonet /slots'9a cooperating with bosses such as Aat 10, projecting in from the side Wall of the neck 3 of the device. The bayonet slots are formed by offsetting the material of the collar 9 asV indicated.

The cover'S is provided with perforations 11, and is also provided with an integral handle 12 struck up from the material and formed on its sides with concave faces 13vto operate as finger holds. This handle enables the cover to be rotated and lifted when disengaging it at the bayonet slots 9; The handle 12 is somewhat elongated, which facilitates the imparting of this rotary movement to the cover.

On the bottom 4 I providea filtering mat the dottcdffliine.

14, of suitable material such `as filter paper.

This mat is sim ly a disk of paper that is laid x on the bottom See Figure l). The pressure of the coffee and the water on the upper side of this filter paper causes it to bend slightly -to-the contour ofcorrugations 15 which I form in the bottom.` These corrugations are preferably of annular form and on their Sides the perforations are provided. They assist inpreventing the iilter paper 14 from becoming dislodged in a 'lateral ldirection in such a way as to expose .the 'perforations which would permit coiee grounds to pass through into Athe cofieezpot. By reason of the presence of the -ilter `paper the coffee which drips through the bottom 4 is very clear andfree from grounds and insoluble fats.l

Thel corrugations Vshouldbe deep enough -and near enough to enable them to hold the iilter paper in the zones 15a out of contact with the perforations 5 which I form on the sides of the corrugations. It ispreferable to have these perforations 5 on the sides rather than inthe bottoms of the corrugations because in the latter case the paper becomes drawn down to the bottom of the corrugations A either in the' top or bottom of the corrugations or in both, in addition to the side perforations, but these would have no substantial effect.

By makin the bowl 1, the bod 2 for the coffee, and tie bottom 4 integra this part' can be very economically manufactured in large quantities by means of suitable dies,

and likelihood lof the bottom wearing out .l or becoming dislodged .is reduced to a minimum.

The water'bowl 1 'is provided'with a cover 15 having a suitable handle 16. This cover is provided with a flange 17 that projects. down into the lip of the bowl, and this flange is provided with a plurality of'bayonet slots 18 similar to the bayonet slots 9. The lip, of the bowl is providedv with a plurality of bosses .19 to. cooperate with these bayonet slots. I prefer to provide at least four of these bayonet slots to facilitate the proper alinement of the cover with the bowl in placingthe cover upon it. 1

I also prefer to j rovide four of the-bayonet slots 9* for attac g the -,inner cover -8 on the coieereceiver l 'By reason ofthe conical shape ofi-the lower portion of the coee receiver, it will'be evident that this device can be used with eoee pots of -dierent sizes, that is to say, colfee pots having Aopenlngs at their u r ends lof different diameteraf The orm of the coffee receiver also'fciliffies the bowl andreceiver infone piece.

vThe interior of the bowl is provided with j a plurality of horizontal gau e lines 20 which correspondto different num ers of cups of Lcoifee desired; that-is to say, these lines indicate the point to which-the bowl should be 'filled With Iwater for making different amounts of coffee.

What I claim is: 1

1. In a coffee maker, the combination of a container in the form of a water bowl of relatively large diameter, said bowl'having an extension of reduced diameter at its-lower end constituting a receptacle for the ground coffee and adapted to be received in an opening of a receptacle that receives the made col'ee from said coffee maker, said reduced extension having a perforated bottom with corrugations formed therein and with the principal perorations .in the side walls of the corrugations, and a sheet of filter paper supported on said bottom, and a perforated cover for the reduced extension operating las a bottom for the said water bowl. j

2.- InA a coiiee maker, the combination of a container in the form of a water bowl of relatively large diameter, said bowl having an extension of reduced diameter at its lower 'end constituting a receptacle for the ground aoy coffee, said reduced extension'having a per-A .forated bottom with a plurality of annular.v corrugations with the principal perforations in the side walls of the corruvations, a' sheet of filter paper supported on the said bottom, and a perforated cover for the reduced en tension operating as a bottom for the sald Water'bowl.

3. Ina co'ee maker, the combination of av container in the form of a water bowl of relatively large diameter, said bowl llavlng an extension of reduced diameter at its lower f end, constituting a receptacle for the ground coiee, and adapted to be received in the upper opening of a coffee pot, said reduced extension having a perforated bottom wlth corrugations formed therein with the i rin- .cipal perforations in the side walls o the corrugations, and operating to support a. ysheet of vfilter paper with the round ooiee disposed above' the same, a per orated cover Afor the reduced'extensionoperating as abottom for the said water bowl, and means lfor locking the cover in position.

4. In a coffee ing` downwardly therefrom, a perforated cover at the bottom ofthe bowl said cover having an integral handle struck maker, the combination. oflax Y. water bowl having'a coffee receptacle extend# upwardly from the material formin .the cover,'said ,A handle being of elongated orm tov facilitatev rotation -of the cover when in placa,Y and a y bayonet slot connection between the cover,

and thefcoiee in place.

receptacle cover 5. co'fee :baker consietingofia tially cylindrical, relatively large bowl with j.

an extension at its lowcrend, including a substantiallycylindrical neck adjacent the bowl with a substantially conicalextension below the neck and forming a receiver for the coffee, said receiver having a pluralityV of annular corrugations with the principal -perforations in the sides thereof, saidbowl the side walls of the corrugations, a sheet of filter papersupported on said corrugations with the ground coffee disposed above the same, and means forming a cover forl the re-` duced extension operating a's a bottom for the said water bowl and adapted to permit water flow from said water bowl to lsaid ex'- tension. A

7. In a coffee maker, the combination of a container in the form of a water bowl of relatively large diameter, said bowl having an extension of reduced diameter constituting a receptacle for the ground coffee, said reduced extension having an integral bottom provided with a plurality ofy annular corrugations and with perforations, the principal perforations being in the side walls of the corrugations; and a perforated cover for the reduced extension operating as a .bottom Vfor the water bowl'.

8. In a coffee maker, the combination of a container in the form of a bowl of relatively large diameter, said bowl having an extension of reduced diameter at its lower end constituting a receptacle for the ground coffee, said're'duced extension having a perforated bottom with corrugations formed therein with the principal perforations in the side walls of the .corrugations; and means forming a cover for the reduced extension operating as a bottom for the said Water bowl and adapted to'permit water ilow from said water bowl to said extension.` v

9. In a cofee maker, the combination of a container, in the form of a bowl of relatively large Chameter, said bowl havmg an extension of' reduced diameter at its lower end, constituting a receptacle for the ground coifee, said reduced extension having a per- --'orated bottom with corrugations formed therein with the'principal perforations in the `side walls of the corrugations.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 20th day of November `1928. f'

CHARLES E. PAGE. 

